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Diffstat (limited to 'net/mac80211/agg-rx.c')
-rw-r--r--net/mac80211/agg-rx.c75
1 files changed, 49 insertions, 26 deletions
diff --git a/net/mac80211/agg-rx.c b/net/mac80211/agg-rx.c
index 1a41b14..df2b6ac 100644
--- a/net/mac80211/agg-rx.c
+++ b/net/mac80211/agg-rx.c
@@ -38,6 +38,7 @@
#include <linux/ieee80211.h>
#include <linux/slab.h>
+#include <linux/export.h>
#include <net/mac80211.h>
#include "ieee80211_i.h"
#include "driver-ops.h"
@@ -48,8 +49,6 @@ static void ieee80211_free_tid_rx(struct rcu_head *h)
container_of(h, struct tid_ampdu_rx, rcu_head);
int i;
- del_timer_sync(&tid_rx->reorder_timer);
-
for (i = 0; i < tid_rx->buf_size; i++)
dev_kfree_skb(tid_rx->reorder_buf[i]);
kfree(tid_rx->reorder_buf);
@@ -71,11 +70,14 @@ void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
if (!tid_rx)
return;
- rcu_assign_pointer(sta->ampdu_mlme.tid_rx[tid], NULL);
+ RCU_INIT_POINTER(sta->ampdu_mlme.tid_rx[tid], NULL);
#ifdef CONFIG_MAC80211_HT_DEBUG
- printk(KERN_DEBUG "Rx BA session stop requested for %pM tid %u\n",
- sta->sta.addr, tid);
+ printk(KERN_DEBUG
+ "Rx BA session stop requested for %pM tid %u %s reason: %d\n",
+ sta->sta.addr, tid,
+ initiator == WLAN_BACK_RECIPIENT ? "recipient" : "inititator",
+ (int)reason);
#endif /* CONFIG_MAC80211_HT_DEBUG */
if (drv_ampdu_action(local, sta->sdata, IEEE80211_AMPDU_RX_STOP,
@@ -86,10 +88,16 @@ void ___ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
/* check if this is a self generated aggregation halt */
if (initiator == WLAN_BACK_RECIPIENT && tx)
ieee80211_send_delba(sta->sdata, sta->sta.addr,
- tid, 0, reason);
+ tid, WLAN_BACK_RECIPIENT, reason);
del_timer_sync(&tid_rx->session_timer);
+ /* make sure ieee80211_sta_reorder_release() doesn't re-arm the timer */
+ spin_lock_bh(&tid_rx->reorder_lock);
+ tid_rx->removed = true;
+ spin_unlock_bh(&tid_rx->reorder_lock);
+ del_timer_sync(&tid_rx->reorder_timer);
+
call_rcu(&tid_rx->rcu_head, ieee80211_free_tid_rx);
}
@@ -101,6 +109,29 @@ void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
mutex_unlock(&sta->ampdu_mlme.mtx);
}
+void ieee80211_stop_rx_ba_session(struct ieee80211_vif *vif, u16 ba_rx_bitmap,
+ const u8 *addr)
+{
+ struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
+ struct sta_info *sta;
+ int i;
+
+ rcu_read_lock();
+ sta = sta_info_get_bss(sdata, addr);
+ if (!sta) {
+ rcu_read_unlock();
+ return;
+ }
+
+ for (i = 0; i < STA_TID_NUM; i++)
+ if (ba_rx_bitmap & BIT(i))
+ set_bit(i, sta->ampdu_mlme.tid_rx_stop_requested);
+
+ ieee80211_queue_work(&sta->local->hw, &sta->ampdu_mlme.work);
+ rcu_read_unlock();
+}
+EXPORT_SYMBOL(ieee80211_stop_rx_ba_session);
+
/*
* After accepting the AddBA Request we activated a timer,
* resetting it after each frame that arrives from the originator.
@@ -145,12 +176,8 @@ static void ieee80211_send_addba_resp(struct ieee80211_sub_if_data *sdata, u8 *d
u16 capab;
skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom);
-
- if (!skb) {
- printk(KERN_DEBUG "%s: failed to allocate buffer "
- "for addba resp frame\n", sdata->name);
+ if (!skb)
return;
- }
skb_reserve(skb, local->hw.extra_tx_headroom);
mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
@@ -158,10 +185,13 @@ static void ieee80211_send_addba_resp(struct ieee80211_sub_if_data *sdata, u8 *d
memcpy(mgmt->da, da, ETH_ALEN);
memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
if (sdata->vif.type == NL80211_IFTYPE_AP ||
- sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
+ sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
+ sdata->vif.type == NL80211_IFTYPE_MESH_POINT)
memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
else if (sdata->vif.type == NL80211_IFTYPE_STATION)
memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN);
+ else if (sdata->vif.type == NL80211_IFTYPE_ADHOC)
+ memcpy(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN);
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
IEEE80211_STYPE_ACTION);
@@ -205,7 +235,7 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
status = WLAN_STATUS_REQUEST_DECLINED;
- if (test_sta_flags(sta, WLAN_STA_BLOCK_BA)) {
+ if (test_sta_flag(sta, WLAN_STA_BLOCK_BA)) {
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "Suspend in progress. "
"Denying ADDBA request\n");
@@ -248,19 +278,17 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
"%pM on tid %u\n",
mgmt->sa, tid);
#endif /* CONFIG_MAC80211_HT_DEBUG */
- goto end;
+
+ /* delete existing Rx BA session on the same tid */
+ ___ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT,
+ WLAN_STATUS_UNSPECIFIED_QOS,
+ false);
}
/* prepare A-MPDU MLME for Rx aggregation */
tid_agg_rx = kmalloc(sizeof(struct tid_ampdu_rx), GFP_KERNEL);
- if (!tid_agg_rx) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
- if (net_ratelimit())
- printk(KERN_ERR "allocate rx mlme to tid %d failed\n",
- tid);
-#endif
+ if (!tid_agg_rx)
goto end;
- }
spin_lock_init(&tid_agg_rx->reorder_lock);
@@ -280,11 +308,6 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
tid_agg_rx->reorder_time =
kcalloc(buf_size, sizeof(unsigned long), GFP_KERNEL);
if (!tid_agg_rx->reorder_buf || !tid_agg_rx->reorder_time) {
-#ifdef CONFIG_MAC80211_HT_DEBUG
- if (net_ratelimit())
- printk(KERN_ERR "can not allocate reordering buffer "
- "to tid %d\n", tid);
-#endif
kfree(tid_agg_rx->reorder_buf);
kfree(tid_agg_rx->reorder_time);
kfree(tid_agg_rx);